This is the answer to what a hypothesis may also be called
Newton's 2nd law of motion: Force = (mass) x (acceleration)
Divide each side by (mass) : Acceleration = (force) / (mass)
Acceleration of the truck = (4,200 N) / (2,000 kg) = 2.1 m/s²
just listen I am also confused in this question if you get the answer so please just tell me also